Trolley-line switch



(No Model.)

W, M. RAMSEY. TROLLEY LINE SWITCH.

No 443,004. Patented Dec. 16, 1890.

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MJZZ' WSQW UNITED STATES PATENT OFFICE.

IVILLIAM M. RAMSEY, OF ALLEGHENY, PENNSYLVANIA.

TROLLEY-LINE SWITCH.

SPECIFICATION forming part of Letters Patent No. 448,004, dated December 16, 1890).

Application filed August '7, 1890. Serial No. 861,347. (No model.)

To all whom, it may concern:

Be it known that I, WILLIAM M. RAMsEY, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Trolley- Line Switches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others IO skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to an improved adjustable electrical trolley-line switch; and it consists in certain details of construction and combination of parts, as will be fully described hereinafter.

In the accompanying drawings, Figure 1 is.

an inverted plan View of my improved switch, which is constructed in accordance with my invention. Fig. 2 is a central sectional elevation of the same. Fig. 3 is an enlarged perspective view of one of the adjustable switch- 2 5 bars.

To construct an electrical trolley-line switch in accordance with my invention, I provide an annular base-plate a, having a downwardly extending hollow conical projection b,

0 through which a bolt 0 is passed. This baseplate a is provided with a series of slots 66, formed about the center and separated the one from the other by intervening integral portions c of the metal. Placed on the top of this base-plate a is a disk f, having a recessed crown g, and is confined in position by means of the bolt 0. Secured between these two plates cf are four switch-bars 70, each of which is provided with a flat web I, having a downwardly extending pin m, formed integral therewith, adapted to enter the slots (Z, formed in the base-plate at. These switch-bars 70 con* sist of a fiat tapering or wedge-shaped plate having recesses 0 formed in the top, in order to reduce the weight of the same, and are also provided with shallow semicircular grooves 19 along the top, in which the trolley line may be either brazed, soldered, or tied.

In operation the switch-arms 7.; may be revolved or adjusted toward or away from each other, thereby forming a switch or turn-out that may be adjusted to suit any required angle for a purpose well known to the art.

When constructing this switch for crossings which would bring the arms close together, the websZ of two opposite switch-bars a are made of a suflicient length to remove the heels, or that portion of the bars 70, some distance away from the base-plate a. This arrangement will prevent the trolley-wheel from catching or coming in contact with the wrong bar To.

Having thus described my invention, I claim-- The herein-described trolley-line switch or cross-over, consisting of the base-plate a, provided with a series of slots d, the clampingdisk f, and a means for securing the two plates together, the switch-bars k, attached between the said platesin a manner that the same may be adjusted toward or away from each other, whereby a cross-over of any desired an gle may be formed, substantially as and for the purpose set forth.

I11 testimony that I claim the foregoing I hereunto affix my signature this 18th day of July, A. D. 1890.

WILLIAM M. RAMSEY. [1.. SJ] 

